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RockyLinux 9 : kernel (RLSA-2026:49212)

critical Nessus Plugin ID 331591

Synopsis

The remote RockyLinux host is missing one or more security updates.

Description

The remote RockyLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:49212 advisory.

 * kernel: ipc: limit next_id allocation to the valid ID range (CVE-2026-52923)

 * kernel: tipc: fix double-free in tipc_buf_append() (CVE-2026-52993)

 * kernel: net: sched: UAF via missing handler for TC_ACT_CONSUMED in tcf_qevent_handle ()

 * kernel: net/sched: cls_api: Handle TC_ACT_CONSUMED in tcf_qevent_handle (CVE-2026-64530)

Tenable has extracted the preceding description block directly from the RockyLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://bugzilla.redhat.com/show_bug.cgi?id=2492094

https://bugzilla.redhat.com/show_bug.cgi?id=2492437

https://bugzilla.redhat.com/show_bug.cgi?id=2504052

https://errata.rockylinux.org/RLSA-2026:49212

Plugin Details

Severity: Critical

ID: 331591

File Name: rocky_linux_RLSA-2026-49212.nasl

Version: 1.1

Type: Local

Published: 8/2/2026

Updated: 8/2/2026

Supported Sensors: Continuous Assessment, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.6

Percentile: 96.9

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2026-64530

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:rocky:linux:9, p-cpe:/a:rocky:linux:kernel-64k-core, p-cpe:/a:rocky:linux:kernel-64k-debug-core, p-cpe:/a:rocky:linux:kernel-64k-debug-debuginfo, p-cpe:/a:rocky:linux:kernel-64k-debug-devel-matched, p-cpe:/a:rocky:linux:kernel-64k-debug-devel, p-cpe:/a:rocky:linux:kernel-64k-debug-modules-core, p-cpe:/a:rocky:linux:kernel-64k-debug-modules-extra, p-cpe:/a:rocky:linux:kernel-64k-debug-modules, p-cpe:/a:rocky:linux:kernel-64k-debug, p-cpe:/a:rocky:linux:kernel-64k-debuginfo, p-cpe:/a:rocky:linux:kernel-64k-devel-matched, p-cpe:/a:rocky:linux:kernel-64k-devel, p-cpe:/a:rocky:linux:kernel-64k-modules-core, p-cpe:/a:rocky:linux:kernel-64k-modules-extra, p-cpe:/a:rocky:linux:kernel-64k-modules, p-cpe:/a:rocky:linux:kernel-64k, p-cpe:/a:rocky:linux:kernel-abi-stablelists, p-cpe:/a:rocky:linux:kernel-core, p-cpe:/a:rocky:linux:kernel-debug-core, p-cpe:/a:rocky:linux:kernel-debug-debuginfo, p-cpe:/a:rocky:linux:kernel-debug-devel-matched, p-cpe:/a:rocky:linux:kernel-debug-devel, p-cpe:/a:rocky:linux:kernel-debug-modules-core, p-cpe:/a:rocky:linux:kernel-debug-modules-extra, p-cpe:/a:rocky:linux:kernel-debug-modules, p-cpe:/a:rocky:linux:kernel-debug-uki-virt, p-cpe:/a:rocky:linux:kernel-debug, p-cpe:/a:rocky:linux:kernel-debuginfo-common-aarch64, p-cpe:/a:rocky:linux:kernel-debuginfo-common-ppc64le, p-cpe:/a:rocky:linux:kernel-debuginfo-common-s390x, p-cpe:/a:rocky:linux:kernel-debuginfo-common-x86_64, p-cpe:/a:rocky:linux:kernel-debuginfo, p-cpe:/a:rocky:linux:kernel-devel-matched, p-cpe:/a:rocky:linux:kernel-devel, p-cpe:/a:rocky:linux:kernel-modules-core, p-cpe:/a:rocky:linux:kernel-modules-extra, p-cpe:/a:rocky:linux:kernel-modules, p-cpe:/a:rocky:linux:kernel-rt-64k-core, p-cpe:/a:rocky:linux:kernel-rt-64k-debug-core, p-cpe:/a:rocky:linux:kernel-rt-64k-debug-debuginfo, p-cpe:/a:rocky:linux:kernel-rt-64k-debug-devel, p-cpe:/a:rocky:linux:kernel-rt-64k-debug-modules-core, p-cpe:/a:rocky:linux:kernel-rt-64k-debug-modules-extra, p-cpe:/a:rocky:linux:kernel-rt-64k-debug-modules, p-cpe:/a:rocky:linux:kernel-rt-64k-debug, p-cpe:/a:rocky:linux:kernel-rt-64k-debuginfo, p-cpe:/a:rocky:linux:kernel-rt-64k-devel, p-cpe:/a:rocky:linux:kernel-rt-64k-modules-core, p-cpe:/a:rocky:linux:kernel-rt-64k-modules-extra, p-cpe:/a:rocky:linux:kernel-rt-64k-modules, p-cpe:/a:rocky:linux:kernel-rt-64k, p-cpe:/a:rocky:linux:kernel-rt-core, p-cpe:/a:rocky:linux:kernel-rt-debug-core, p-cpe:/a:rocky:linux:kernel-rt-debug-debuginfo, p-cpe:/a:rocky:linux:kernel-rt-debug-devel, p-cpe:/a:rocky:linux:kernel-rt-debug-modules-core, p-cpe:/a:rocky:linux:kernel-rt-debug-modules-extra, p-cpe:/a:rocky:linux:kernel-rt-debug-modules, p-cpe:/a:rocky:linux:kernel-rt-debug, p-cpe:/a:rocky:linux:kernel-rt-debuginfo, p-cpe:/a:rocky:linux:kernel-rt-devel, p-cpe:/a:rocky:linux:kernel-rt-modules-core, p-cpe:/a:rocky:linux:kernel-rt-modules-extra, p-cpe:/a:rocky:linux:kernel-rt-modules, p-cpe:/a:rocky:linux:kernel-rt, p-cpe:/a:rocky:linux:kernel-tools-debuginfo, p-cpe:/a:rocky:linux:kernel-tools-libs-devel, p-cpe:/a:rocky:linux:kernel-tools-libs, p-cpe:/a:rocky:linux:kernel-tools, p-cpe:/a:rocky:linux:kernel-uki-virt-addons, p-cpe:/a:rocky:linux:kernel-uki-virt, p-cpe:/a:rocky:linux:kernel-zfcpdump-core, p-cpe:/a:rocky:linux:kernel-zfcpdump-debuginfo, p-cpe:/a:rocky:linux:kernel-zfcpdump-devel-matched, p-cpe:/a:rocky:linux:kernel-zfcpdump-devel, p-cpe:/a:rocky:linux:kernel-zfcpdump-modules-core, p-cpe:/a:rocky:linux:kernel-zfcpdump-modules-extra, p-cpe:/a:rocky:linux:kernel-zfcpdump-modules, p-cpe:/a:rocky:linux:kernel-zfcpdump, p-cpe:/a:rocky:linux:kernel, p-cpe:/a:rocky:linux:libperf-debuginfo, p-cpe:/a:rocky:linux:libperf, p-cpe:/a:rocky:linux:perf-debuginfo, p-cpe:/a:rocky:linux:perf, p-cpe:/a:rocky:linux:python3-perf-debuginfo, p-cpe:/a:rocky:linux:python3-perf, p-cpe:/a:rocky:linux:rtla, p-cpe:/a:rocky:linux:rv

Required KB Items: Host/local_checks_enabled, Host/RockyLinux/release, Host/RockyLinux/rpm-list, Host/cpu

Exploit Ease: No known exploits are available

Patch Publication Date: 8/2/2026

Vulnerability Publication Date: 6/22/2026

Reference Information

CVE: CVE-2026-52923, CVE-2026-52993, CVE-2026-64530